package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import com.sky.vo.DishItemVO;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.weaver.ast.Var;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {


    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private DishMapper  dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    /**
     * 添加购物车
     * @param shoppingCartDTO
     */
    @Override
    public void add(ShoppingCartDTO shoppingCartDTO) {

        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        shoppingCart.setUserId(BaseContext.getCurrentId());
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list != null && list.size() > 0) {
            ShoppingCart cart = list.get(0);
            cart.setNumber(cart.getNumber() + 1);
            shoppingCartMapper.updateNumberByid(cart);
        }else {
            Long  dishId = shoppingCartDTO.getDishId();
            if (dishId != null) {
                Dish dish = dishMapper.getByid(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());

            }else {


                Long  setmealId = shoppingCartDTO.getSetmealId();
                Setmeal setmeal = setmealMapper.getByid(setmealId);
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());

            }
            shoppingCart.setCreateTime(LocalDateTime.now());

            shoppingCart.setNumber(1);
            shoppingCartMapper.insert(shoppingCart);
        }

    }

    @Override
    public List<ShoppingCart> showShoppingCart() {
        Long currentId = BaseContext.getCurrentId();
        ShoppingCart cart = ShoppingCart
                .builder().
                userId(currentId).
                build();
        List<ShoppingCart> list = shoppingCartMapper.list(cart);
        return list;
    }

    @Override
    public void delete() {
        Long currentId = BaseContext.getCurrentId();
        shoppingCartMapper.deleteByUserId(currentId);
    }

    @Override
    public void sub(ShoppingCartDTO shoppingCartDTO) {
        Long setmealId = shoppingCartDTO.getSetmealId();
        Long dishId = shoppingCartDTO.getDishId();
        String dishFlavor = shoppingCartDTO.getDishFlavor();

        Integer dishnumber = shoppingCartMapper.getNumberByDishIdAndFlavor(dishId, dishFlavor);
        Integer setmealNumber = shoppingCartMapper.getNumberBySetmealId(setmealId);
        if (setmealNumber!=null &&  dishnumber>1){
            shoppingCartMapper.deleteOne(shoppingCartDTO);
        }else if( setmealNumber!=null && setmealNumber>1 ){
            shoppingCartMapper.deleteOne(shoppingCartDTO);
        } else {
            shoppingCartMapper.delete(shoppingCartDTO);
        }

    }
}
